Male Repro Histology Flashcards Preview

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Flashcards in Male Repro Histology Deck (50)
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1

mesonephric ducts

male- wolffian ducts

2

paramesonephric ducts

female- mullarian ducts

3

cloacal folds and genital tubercle

external genitalia

4

testis septa

divides into lobules

5

testis mediastinum

posterior thickening

6

spermatogenesis

meiotic division + spermiogenesis

7

spermiogenesis

maturation of spermatids into spermatozoa

8

spermatagonia type Ad

undergo mitosis

9

spermatagonia type Ap

undergo mitosis, but are closer to starting meiosis

10

spermatogonia type B

meiosis

11

progression of spermatogonia

spermatogonia--> primary spermatocyte--> secondary spermatocyte--> spermatids-> spermatozoa

12

spermatagonia

small cells with pale nucleus
found along basal lamina
2 copies of diploid genome

13

primary spermacyte

large cells with chromosome coiling
will be most of cells present
2 copies of diploid genome

14

secondary spermatocyte

smaller, not usually seen
1 copy of diploid genome

15

early spermatid

small, condensed chromatin
close to the lumen
1 copy of haploid genome

16

late spermatid

lost cytoplasm, developed a flagellum, condensed nucleus
heads in stroll cells and tails in lumen
1 copy of haploid genome

17

3 phases of spermatogenesis and significant event in each

golgi phase- acrosomal granule is formed, flagellum starts to form
acrosomal phase- acrosomal cap formed over nucleus, flagellum elongates, nucleus condenses
maturation- extra cytoplasm shed, spermatozoa released into seminiferous tubule lumen

18

parts of the spermatozoa

head- nucleus with acrosome
neck- centriole location
tail- complicated

19

parts of the tail of a spermatozoa

midpiece- axoneme, mitochondria, outer dense fibers
principal- axoneme, outer dense fibers, circular fibers
tail- axoneme

20

axoneme

microtubules surrounded by proteins that form the flagellum

21

significant feature of sertoli cells

prominent nucleolus

22

secretions of sertoli cells and their roles

androgen binding protein- binds androgens
inhibin/activin- control spermatogenesis
AMH- promotes mullarian duct regression

23

blood testis barrier

sertoli cells connected by zonula occludins

24

cells in the interstitium of testis

myoid cells- contractile function to push spermatozoa out of seminiferous tubules
interstitial cells of leydig- secrete testosterone

25

roles of testosterone throughout life

8-18wks fetal- mesonephric duct development
- converted to DHT for external genitalia development
puberty- spermatogenesis, libido, secondary sex characterstics, function of accessory glands

26

path of spermatozoa after leaving seminerferous tubules

straight tubules--> rete testis--> efferent ducts

27

function of efferent ducts

transport spermatozoa

28

sperm storage site

tail of epididymis

29

lining of duct system

rete testis- simple cuboidal with cilia/microvili
efferent ducts- pseudostratified columnar with cilia or cuboidal

30

lining of epididymis

pseudo stratified columnar- height decreases distally